// TODO:
-// * remove recursion from biosfn_write_teletype()
// * review correctness of converted asm by comparing with RBIL
-// * refactor redundant code into sub-functions
-// * See if there is a method to the in/out stuff that can be encapsulated.
-// * remove "biosfn" prefixes
-// * verify all funcs static
//
// * convert vbe/clext code
#include "biosvar.h" // GET_BDA
#include "util.h" // memset
#include "vgatables.h" // find_vga_entry
-
-// XXX
-#define CONFIG_VBE 0
-#define CONFIG_CIRRUS 0
+#include "optionroms.h" // struct pci_data
+#include "config.h" // CONFIG_*
+#include "vbe.h" // vbe_*
// XXX
#define DEBUG_VGA_POST 1
#define SET_VGA(var, val) SET_FARVAR(get_global_seg(), (var), (val))
-inline void
+/****************************************************************
+ * PCI Data
+ ****************************************************************/
+#if CONFIG_VGA_PCI == 1
+struct pci_data rom_pci_data VAR16VISIBLE = {
+ .signature = PCI_ROM_SIGNATURE,
+ .vendor = CONFIG_VGA_VID,
+ .device = CONFIG_VGA_DID,
+ .dlen = 0x18,
+ .class_hi = 0x300,
+ .irevision = 1,
+ .type = PCIROM_CODETYPE_X86,
+ .indicator = 0x80,
+};
+#endif
+
+/****************************************************************
+ * Helper functions
+ ****************************************************************/
+
+static inline void
call16_vgaint(u32 eax, u32 ebx)
{
asm volatile(
}
static void
-biosfn_perform_gray_scale_summing(u16 start, u16 count)
+perform_gray_scale_summing(u16 start, u16 count)
{
vgahw_screen_disable();
int i;
}
static void
-biosfn_set_cursor_shape(u8 CH, u8 CL)
+set_cursor_shape(u8 start, u8 end)
{
- CH &= 0x3f;
- CL &= 0x1f;
+ start &= 0x3f;
+ end &= 0x1f;
- u16 curs = (CH << 8) + CL;
+ u16 curs = (start << 8) + end;
SET_BDA(cursor_type, curs);
u8 modeset_ctl = GET_BDA(modeset_ctl);
u16 cheight = GET_BDA(char_height);
- if ((modeset_ctl & 0x01) && (cheight > 8) && (CL < 8) && (CH < 0x20)) {
- if (CL != (CH + 1))
- CH = ((CH + 1) * cheight / 8) - 1;
+ if ((modeset_ctl & 0x01) && (cheight > 8) && (end < 8) && (start < 0x20)) {
+ if (end != (start + 1))
+ start = ((start + 1) * cheight / 8) - 1;
else
- CH = ((CL + 1) * cheight / 8) - 2;
- CL = ((CL + 1) * cheight / 8) - 1;
+ start = ((end + 1) * cheight / 8) - 2;
+ end = ((end + 1) * cheight / 8) - 1;
}
- vgahw_set_cursor_shape(CH, CL);
+ vgahw_set_cursor_shape(start, end);
}
static u16
-biosfn_get_cursor_shape(u8 page)
+get_cursor_shape(u8 page)
{
if (page > 7)
return 0;
vgahw_set_cursor_pos(address);
}
-struct cursorpos
+static struct cursorpos
get_cursor_pos(u8 page)
{
if (page == 0xff)
}
static void
-biosfn_set_active_page(u8 page)
+set_active_page(u8 page)
{
if (page > 7)
return;
struct cursorpos cp = get_cursor_pos(page);
u16 address;
- if (GET_GLOBAL(vmode_g->class) == TEXT) {
+ if (GET_GLOBAL(vmode_g->memmodel) & TEXT) {
// Get the dimensions
u16 nbcols = GET_BDA(video_cols);
u16 nbrows = GET_BDA(video_rows) + 1;
// Start address
address = SCREEN_IO_START(nbcols, nbrows, page);
} else {
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- address = page * GET_GLOBAL(vparam_g->slength);
+ address = page * GET_GLOBAL(vmode_g->slength);
}
vgahw_set_active_page(address);
}
static void
-biosfn_write_teletype(u8 page, struct carattr ca)
+set_scan_lines(u8 lines)
{
- // Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
- if (!vmode_g)
- return;
+ vgahw_set_scan_lines(lines);
+ if (lines == 8)
+ set_cursor_shape(0x06, 0x07);
+ else
+ set_cursor_shape(lines - 4, lines - 3);
+ SET_BDA(char_height, lines);
+ u16 vde = vgahw_get_vde();
+ u8 rows = vde / lines;
+ SET_BDA(video_rows, rows - 1);
+ u16 cols = GET_BDA(video_cols);
+ SET_BDA(video_pagesize, rows * cols * 2);
+}
- // Get the cursor pos for the page
- struct cursorpos cp = get_cursor_pos(page);
+
+/****************************************************************
+ * Character writing
+ ****************************************************************/
+
+// Scroll the screen one line. This function is designed to be called
+// tail-recursive to reduce stack usage.
+static void noinline
+scroll_one(u16 nbrows, u16 nbcols, u8 page)
+{
+ struct cursorpos ul = {0, 0, page};
+ struct cursorpos lr = {nbcols-1, nbrows-1, page};
+ vgafb_scroll(1, -1, ul, lr);
+}
+
+// Write a character to the screen at a given position. Implement
+// special characters and scroll the screen if necessary.
+static void
+write_teletype(struct cursorpos *pcp, struct carattr ca)
+{
+ struct cursorpos cp = *pcp;
// Get the dimensions
u16 nbrows = GET_BDA(video_rows) + 1;
case 7:
//FIXME should beep
break;
-
case 8:
if (cp.x > 0)
cp.x--;
break;
-
case '\r':
cp.x = 0;
break;
-
case '\n':
cp.y++;
break;
-
case '\t':
do {
struct carattr dummyca = {' ', ca.attr, ca.use_attr};
- biosfn_write_teletype(page, dummyca);
- cp = get_cursor_pos(page);
- } while (cp.x % 8 == 0);
+ vgafb_write_char(cp, dummyca);
+ cp.x++;
+ } while (cp.x < nbcols && cp.x % 8);
break;
-
default:
- vgafb_write_char(cp.page, ca, 1);
+ vgafb_write_char(cp, ca);
cp.x++;
}
cp.y++;
}
// Do we need to scroll ?
- if (cp.y == nbrows) {
- if (GET_GLOBAL(vmode_g->class) == TEXT)
- biosfn_scroll(0x01, 0x07, 0, 0, nbrows - 1, nbcols - 1, page,
- SCROLL_UP);
- else
- biosfn_scroll(0x01, 0x00, 0, 0, nbrows - 1, nbcols - 1, page,
- SCROLL_UP);
- cp.y--;
+ if (cp.y < nbrows) {
+ *pcp = cp;
+ return;
}
- // Set the cursor for the page
- set_cursor_pos(cp);
+ // Scroll screen
+ cp.y--;
+ *pcp = cp;
+ scroll_one(nbrows, nbcols, cp.page);
}
+// Write out a buffer of alternating characters and attributes.
static void
-biosfn_write_string(struct cursorpos cp, u8 flag, u8 attr, u16 count,
- u16 seg, u8 *offset_far)
+write_attr_string(struct cursorpos *pcp, u16 count, u16 seg, u8 *offset_far)
{
- // Read curs info for the page
- struct cursorpos oldcp = get_cursor_pos(cp.page);
-
- // if row=0xff special case : use current cursor position
- if (cp.y == 0xff)
- cp = oldcp;
-
- set_cursor_pos(cp);
-
- while (count-- != 0) {
+ while (count--) {
u8 car = GET_FARVAR(seg, *offset_far);
offset_far++;
- if ((flag & 0x02) != 0) {
- attr = GET_FARVAR(seg, *offset_far);
- offset_far++;
- }
+ u8 attr = GET_FARVAR(seg, *offset_far);
+ offset_far++;
struct carattr ca = {car, attr, 1};
- biosfn_write_teletype(cp.page, ca);
+ write_teletype(pcp, ca);
}
-
- // Set back curs pos
- if ((flag & 0x01) == 0)
- set_cursor_pos(oldcp);
}
+// Write out a buffer of characters.
static void
-set_scan_lines(u8 lines)
+write_string(struct cursorpos *pcp, u8 attr, u16 count, u16 seg, u8 *offset_far)
{
- vgahw_set_scan_lines(lines);
- if (lines == 8)
- biosfn_set_cursor_shape(0x06, 0x07);
- else
- biosfn_set_cursor_shape(lines - 4, lines - 3);
- SET_BDA(char_height, lines);
- u16 vde = vgahw_get_vde();
- u8 rows = vde / lines;
- SET_BDA(video_rows, rows - 1);
- u16 cols = GET_BDA(video_cols);
- SET_BDA(video_pagesize, rows * cols * 2);
+ while (count--) {
+ u8 car = GET_FARVAR(seg, *offset_far);
+ offset_far++;
+
+ struct carattr ca = {car, attr, 1};
+ write_teletype(pcp, ca);
+ }
}
+
+/****************************************************************
+ * Save and restore bda state
+ ****************************************************************/
+
static void
-biosfn_save_bda_state(u16 seg, struct saveBDAstate *info)
+save_bda_state(u16 seg, struct saveBDAstate *info)
{
SET_FARVAR(seg, info->video_mode, GET_BDA(video_mode));
SET_FARVAR(seg, info->video_cols, GET_BDA(video_cols));
SET_FARVAR(seg, info->video_pagestart, GET_BDA(video_pagestart));
SET_FARVAR(seg, info->video_page, GET_BDA(video_page));
/* current font */
- SET_FARVAR(seg, *(u32*)&info->font0_off, GET_IVT(0x1f).segoff);
- SET_FARVAR(seg, *(u32*)&info->font1_off, GET_IVT(0x43).segoff);
+ SET_FARVAR(seg, info->font0, GET_IVT(0x1f));
+ SET_FARVAR(seg, info->font1, GET_IVT(0x43));
}
static void
-biosfn_restore_bda_state(u16 seg, struct saveBDAstate *info)
+restore_bda_state(u16 seg, struct saveBDAstate *info)
{
SET_BDA(video_mode, GET_FARVAR(seg, info->video_mode));
SET_BDA(video_cols, GET_FARVAR(seg, info->video_cols));
SET_BDA(video_pagestart, GET_FARVAR(seg, info->video_pagestart));
SET_BDA(video_page, GET_FARVAR(seg, info->video_page));
/* current font */
- SET_IVT(0x1f, GET_FARVAR(seg, info->font0_seg)
- , GET_FARVAR(seg, info->font0_off));
- SET_IVT(0x43, GET_FARVAR(seg, info->font1_seg)
- , GET_FARVAR(seg, info->font1_off));
+ SET_IVT(0x1f, GET_FARVAR(seg, info->font0));
+ SET_IVT(0x43, GET_FARVAR(seg, info->font1));
}
****************************************************************/
// set video mode
-static void
-handle_1000(struct bregs *regs)
+void
+vga_set_mode(u8 mode, u8 noclearmem)
{
- u8 noclearmem = regs->al & 0x80;
- u8 mode = regs->al & 0x7f;
-
- // Set regs->al
- if (mode > 7)
- regs->al = 0x20;
- else if (mode == 6)
- regs->al = 0x3f;
- else
- regs->al = 0x30;
-
- if (CONFIG_CIRRUS)
- cirrus_set_video_mode(mode);
-
- if (CONFIG_VBE)
- if (vbe_has_vbe_display())
- dispi_set_enable(VBE_DISPI_DISABLED);
-
// find the entry in the video modes
struct vgamode_s *vmode_g = find_vga_entry(mode);
dprintf(1, "mode search %02x found %p\n", mode, vmode_g);
}
if ((modeset_ctl & 0x02) == 0x02)
- biosfn_perform_gray_scale_summing(0x00, 0x100);
+ perform_gray_scale_summing(0x00, 0x100);
}
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- vgahw_set_mode(vparam_g);
+ vgahw_set_mode(vmode_g);
if (noclearmem == 0x00)
clear_screen(vmode_g);
crtc_addr = VGAREG_MDA_CRTC_ADDRESS;
// Set the BIOS mem
- u16 cheight = GET_GLOBAL(vparam_g->cheight);
+ u16 cheight = GET_GLOBAL(vmode_g->cheight);
SET_BDA(video_mode, mode);
- SET_BDA(video_cols, GET_GLOBAL(vparam_g->twidth));
- SET_BDA(video_pagesize, GET_GLOBAL(vparam_g->slength));
+ SET_BDA(video_cols, GET_GLOBAL(vmode_g->twidth));
+ SET_BDA(video_pagesize, GET_GLOBAL(vmode_g->slength));
SET_BDA(crtc_address, crtc_addr);
- SET_BDA(video_rows, GET_GLOBAL(vparam_g->theightm1));
+ SET_BDA(video_rows, GET_GLOBAL(vmode_g->theight)-1);
SET_BDA(char_height, cheight);
SET_BDA(video_ctl, (0x60 | noclearmem));
SET_BDA(video_switches, 0xF9);
// FIXME We nearly have the good tables. to be reworked
SET_BDA(dcc_index, 0x08); // 8 is VGA should be ok for now
- SET_BDA(video_savetable_ptr, (u32)video_save_pointer_table);
- SET_BDA(video_savetable_seg, get_global_seg());
+ SET_BDA(video_savetable
+ , SEGOFF(get_global_seg(), (u32)&video_save_pointer_table));
// FIXME
SET_BDA(video_msr, 0x00); // Unavailable on vanilla vga, but...
SET_BDA(video_pal, 0x00); // Unavailable on vanilla vga, but...
// Set cursor shape
- if (GET_GLOBAL(vmode_g->class) == TEXT)
- biosfn_set_cursor_shape(0x06, 0x07);
+ if (GET_GLOBAL(vmode_g->memmodel) & TEXT)
+ set_cursor_shape(0x06, 0x07);
// Set cursor pos for page 0..7
int i;
for (i = 0; i < 8; i++) {
}
// Set active page 0
- biosfn_set_active_page(0x00);
+ set_active_page(0x00);
// Write the fonts in memory
- if (GET_GLOBAL(vmode_g->class) == TEXT) {
+ if (GET_GLOBAL(vmode_g->memmodel) & TEXT) {
call16_vgaint(0x1104, 0);
call16_vgaint(0x1103, 0);
}
// Set the ints 0x1F and 0x43
- SET_IVT(0x1f, get_global_seg(), (u32)&vgafont8[128 * 8]);
+ SET_IVT(0x1f, SEGOFF(get_global_seg(), (u32)&vgafont8[128 * 8]));
switch (cheight) {
case 8:
- SET_IVT(0x43, get_global_seg(), (u32)vgafont8);
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont8));
break;
case 14:
- SET_IVT(0x43, get_global_seg(), (u32)vgafont14);
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont14));
break;
case 16:
- SET_IVT(0x43, get_global_seg(), (u32)vgafont16);
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont16));
break;
}
}
+static void
+handle_1000(struct bregs *regs)
+{
+ u8 noclearmem = regs->al & 0x80;
+ u8 mode = regs->al & 0x7f;
+
+ // Set regs->al
+ if (mode > 7)
+ regs->al = 0x20;
+ else if (mode == 6)
+ regs->al = 0x3f;
+ else
+ regs->al = 0x30;
+
+ if (CONFIG_VGA_CIRRUS) {
+ int ret = cirrus_set_video_mode(mode, noclearmem);
+ if (ret)
+ return;
+ }
+
+ if (vbe_enabled())
+ vbe_hires_enable(0);
+
+ vga_set_mode(mode, noclearmem);
+}
+
static void
handle_1001(struct bregs *regs)
{
- biosfn_set_cursor_shape(regs->ch, regs->cl);
+ set_cursor_shape(regs->ch, regs->cl);
}
static void
static void
handle_1003(struct bregs *regs)
{
- regs->cx = biosfn_get_cursor_shape(regs->bh);
+ regs->cx = get_cursor_shape(regs->bh);
struct cursorpos cp = get_cursor_pos(regs->bh);
regs->dl = cp.x;
regs->dh = cp.y;
static void
handle_1005(struct bregs *regs)
{
- biosfn_set_active_page(regs->al);
+ set_active_page(regs->al);
+}
+
+static void
+verify_scroll(struct bregs *regs, int dir)
+{
+ u8 page = GET_BDA(video_page);
+ struct cursorpos ul = {regs->cl, regs->ch, page};
+ struct cursorpos lr = {regs->dl, regs->dh, page};
+
+ u16 nbrows = GET_BDA(video_rows) + 1;
+ if (lr.y >= nbrows)
+ lr.y = nbrows - 1;
+ u16 nbcols = GET_BDA(video_cols);
+ if (lr.x >= nbcols)
+ lr.x = nbcols - 1;
+
+ if (ul.x > lr.x || ul.y > lr.y)
+ return;
+
+ u16 nblines = regs->al;
+ if (!nblines || nblines > lr.y - ul.y + 1)
+ nblines = lr.y - ul.y + 1;
+
+ vgafb_scroll(dir * nblines, regs->bh, ul, lr);
}
static void
handle_1006(struct bregs *regs)
{
- biosfn_scroll(regs->al, regs->bh, regs->ch, regs->cl, regs->dh, regs->dl
- , 0xFF, SCROLL_UP);
+ verify_scroll(regs, 1);
}
static void
handle_1007(struct bregs *regs)
{
- biosfn_scroll(regs->al, regs->bh, regs->ch, regs->cl, regs->dh, regs->dl
- , 0xFF, SCROLL_DOWN);
+ verify_scroll(regs, -1);
}
static void
handle_1008(struct bregs *regs)
{
- struct carattr ca = vgafb_read_char(regs->bh);
+ struct carattr ca = vgafb_read_char(get_cursor_pos(regs->bh));
regs->al = ca.car;
regs->ah = ca.attr;
}
+static void noinline
+write_chars(u8 page, struct carattr ca, u16 count)
+{
+ struct cursorpos cp = get_cursor_pos(page);
+ while (count--) {
+ vgafb_write_char(cp, ca);
+ cp.x++;
+ }
+}
+
static void
handle_1009(struct bregs *regs)
{
struct carattr ca = {regs->al, regs->bl, 1};
- vgafb_write_char(regs->bh, ca, regs->cx);
+ write_chars(regs->bh, ca, regs->cx);
}
static void
handle_100a(struct bregs *regs)
{
struct carattr ca = {regs->al, regs->bl, 0};
- vgafb_write_char(regs->bh, ca, regs->cx);
+ write_chars(regs->bh, ca, regs->cx);
}
static void
handle_100c(struct bregs *regs)
{
- // XXX - inline
- biosfn_write_pixel(regs->bh, regs->al, regs->cx, regs->dx);
+ // XXX - page (regs->bh) is unused
+ vgafb_write_pixel(regs->al, regs->cx, regs->dx);
}
static void
handle_100d(struct bregs *regs)
{
- // XXX - inline
- biosfn_read_pixel(regs->bh, regs->cx, regs->dx, ®s->ax);
+ // XXX - page (regs->bh) is unused
+ regs->al = vgafb_read_pixel(regs->cx, regs->dx);
}
-static void
+static void noinline
handle_100e(struct bregs *regs)
{
// Ralf Brown Interrupt list is WRONG on bh(page)
// We do output only on the current page !
struct carattr ca = {regs->al, regs->bl, 0};
- biosfn_write_teletype(0xff, ca);
+ struct cursorpos cp = get_cursor_pos(0xff);
+ write_teletype(&cp, ca);
+ set_cursor_pos(cp);
}
static void
static void
handle_101008(struct bregs *regs)
{
- regs->bh = vgahw_get_overscan_border_color(regs);
+ regs->bh = vgahw_get_overscan_border_color();
}
static void
vgahw_get_all_palette_reg(regs->es, (u8*)(regs->dx + 0));
}
-static void
+static void noinline
handle_101010(struct bregs *regs)
{
u8 rgb[3] = {regs->dh, regs->ch, regs->cl};
vgahw_select_video_dac_color_page(regs->bl, regs->bh);
}
-static void
+static void noinline
handle_101015(struct bregs *regs)
{
u8 rgb[3];
static void
handle_10101b(struct bregs *regs)
{
- biosfn_perform_gray_scale_summing(regs->bx, regs->cx);
+ perform_gray_scale_summing(regs->bx, regs->cx);
}
static void
{
switch (regs->bh) {
case 0x00: {
- u32 segoff = GET_IVT(0x1f).segoff;
- regs->es = segoff >> 16;
- regs->bp = segoff;
+ struct segoff_s so = GET_IVT(0x1f);
+ regs->es = so.seg;
+ regs->bp = so.offset;
break;
}
case 0x01: {
- u32 segoff = GET_IVT(0x43).segoff;
- regs->es = segoff >> 16;
- regs->bp = segoff;
+ struct segoff_s so = GET_IVT(0x43);
+ regs->es = so.seg;
+ regs->bp = so.offset;
break;
}
case 0x02:
}
-static void
+// Write string
+static void noinline
handle_1013(struct bregs *regs)
{
- // XXX - inline
struct cursorpos cp = {regs->dl, regs->dh, regs->bh};
- biosfn_write_string(cp, regs->al, regs->bl, regs->cx
- , regs->es, (void*)(regs->bp + 0));
+ // if row=0xff special case : use current cursor position
+ if (cp.y == 0xff)
+ cp = get_cursor_pos(cp.page);
+ u8 flag = regs->al;
+ if (flag & 2)
+ write_attr_string(&cp, regs->cx, regs->es, (void*)(regs->bp + 0));
+ else
+ write_string(&cp, regs->bl, regs->cx, regs->es, (void*)(regs->bp + 0));
+
+ if (flag & 1)
+ set_cursor_pos(cp);
}
struct funcInfo {
- u16 static_functionality_off;
- u16 static_functionality_seg;
+ struct segoff_s static_functionality;
u8 bda_0x49[30];
u8 bda_0x84[3];
u8 dcc_index;
struct funcInfo *info = (void*)(regs->di+0);
memset_far(seg, info, 0, sizeof(*info));
// Address of static functionality table
- SET_FARVAR(seg, info->static_functionality_off, (u32)static_functionality);
- SET_FARVAR(seg, info->static_functionality_seg, get_global_seg());
+ SET_FARVAR(seg, info->static_functionality
+ , SEGOFF(get_global_seg(), (u32)static_functionality));
// Hard coded copy from BIOS area. Should it be cleaner ?
- memcpy_far(seg, info->bda_0x49, SEG_BDA, (void*)0x49, 30);
- memcpy_far(seg, info->bda_0x84, SEG_BDA, (void*)0x84, 3);
+ memcpy_far(seg, info->bda_0x49, SEG_BDA, (void*)0x49
+ , sizeof(info->bda_0x49));
+ memcpy_far(seg, info->bda_0x84, SEG_BDA, (void*)0x84
+ , sizeof(info->bda_0x84));
SET_FARVAR(seg, info->dcc_index, GET_BDA(dcc_index));
SET_FARVAR(seg, info->colors, 16);
data += sizeof(struct saveVideoHardware);
}
if (flags & 2) {
- biosfn_save_bda_state(seg, data);
+ save_bda_state(seg, data);
data += sizeof(struct saveBDAstate);
}
if (flags & 4)
data += sizeof(struct saveVideoHardware);
}
if (flags & 2) {
- biosfn_restore_bda_state(seg, data);
+ restore_bda_state(seg, data);
data += sizeof(struct saveBDAstate);
}
if (flags & 4)
}
}
-
static void
handle_104f00(struct bregs *regs)
{
- // XXX - vbe_biosfn_return_controller_information(&AX,ES,DI);
- // XXX - OR cirrus_vesa_00h
+ u16 seg = regs->es;
+ struct vbe_info *info = (void*)(regs->di+0);
+
+ if (GET_FARVAR(seg, info->signature) == VBE2_SIGNATURE) {
+ dprintf(4, "Get VBE Controller: VBE2 Signature found\n");
+ } else if (GET_FARVAR(seg, info->signature) == VESA_SIGNATURE) {
+ dprintf(4, "Get VBE Controller: VESA Signature found\n");
+ } else {
+ dprintf(4, "Get VBE Controller: Invalid Signature\n");
+ }
+
+ memset_far(seg, info, 0, sizeof(*info));
+
+ SET_FARVAR(seg, info->signature, VESA_SIGNATURE);
+
+ SET_FARVAR(seg, info->version, 0x0200);
+
+ SET_FARVAR(seg, info->oem_string,
+ SEGOFF(get_global_seg(), (u32)VBE_OEM_STRING));
+ SET_FARVAR(seg, info->capabilities[0], 0x1); /* 8BIT DAC */
+
+ /* We generate our mode list in the reserved field of the info block */
+ SET_FARVAR(seg, info->video_mode, SEGOFF(seg, regs->di + 34));
+
+ /* Total memory (in 64 blocks) */
+ SET_FARVAR(seg, info->total_memory, vbe_total_mem());
+
+ SET_FARVAR(seg, info->oem_vendor_string,
+ SEGOFF(get_global_seg(), (u32)VBE_VENDOR_STRING));
+ SET_FARVAR(seg, info->oem_product_string,
+ SEGOFF(get_global_seg(), (u32)VBE_PRODUCT_STRING));
+ SET_FARVAR(seg, info->oem_revision_string,
+ SEGOFF(get_global_seg(), (u32)VBE_REVISION_STRING));
+
+ /* Fill list of modes */
+ vbe_list_modes(seg, regs->di + 32);
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
}
static void
handle_104f01(struct bregs *regs)
{
- // XXX - vbe_biosfn_return_mode_information(&AX,CX,ES,DI);
- // XXX - OR cirrus_vesa_01h
+ u16 seg = regs->es;
+ struct vbe_mode_info *info = (void*)(regs->di+0);
+ u16 mode = regs->cx;
+ struct vbe_modeinfo modeinfo;
+ int rc;
+
+ dprintf(1, "VBE mode info request: %x\n", mode);
+
+ rc = vbe_mode_info(mode, &modeinfo);
+ if (rc) {
+ dprintf(1, "VBE mode %x not found\n", mode);
+ regs->ax = 0x100;
+ return;
+ }
+
+ u16 mode_attr = VBE_MODE_ATTRIBUTE_SUPPORTED |
+ VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE |
+ VBE_MODE_ATTRIBUTE_COLOR_MODE |
+ VBE_MODE_ATTRIBUTE_GRAPHICS_MODE;
+ if (modeinfo.depth == 4)
+ mode_attr |= VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT;
+ else
+ mode_attr |= VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE;
+ SET_FARVAR(seg, info->mode_attributes, mode_attr);
+ SET_FARVAR(seg, info->winA_attributes,
+ VBE_WINDOW_ATTRIBUTE_RELOCATABLE |
+ VBE_WINDOW_ATTRIBUTE_READABLE |
+ VBE_WINDOW_ATTRIBUTE_WRITEABLE);
+ SET_FARVAR(seg, info->winB_attributes, 0);
+ SET_FARVAR(seg, info->win_granularity, 64); /* Bank size 64K */
+ SET_FARVAR(seg, info->win_size, 64); /* Bank size 64K */
+ SET_FARVAR(seg, info->winA_seg, 0xA000);
+ SET_FARVAR(seg, info->winB_seg, 0x0);
+ SET_FARVAR(seg, info->win_func_ptr, 0x0);
+ SET_FARVAR(seg, info->bytes_per_scanline, modeinfo.linesize);
+ SET_FARVAR(seg, info->xres, modeinfo.width);
+ SET_FARVAR(seg, info->yres, modeinfo.height);
+ SET_FARVAR(seg, info->xcharsize, 8);
+ SET_FARVAR(seg, info->ycharsize, 16);
+ if (modeinfo.depth == 4)
+ SET_FARVAR(seg, info->planes, 4);
+ else
+ SET_FARVAR(seg, info->planes, 1);
+ SET_FARVAR(seg, info->bits_per_pixel, modeinfo.depth);
+ SET_FARVAR(seg, info->banks,
+ (modeinfo.linesize * modeinfo.height + 65535) / 65536);
+ if (modeinfo.depth == 4)
+ SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PLANAR);
+ else if (modeinfo.depth == 8)
+ SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PACKED_PIXEL);
+ else
+ SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_DIRECT_COLOR);
+ SET_FARVAR(seg, info->bank_size, 0);
+ u32 pages = modeinfo.vram_size / (modeinfo.height * modeinfo.linesize);
+ if (modeinfo.depth == 4)
+ SET_FARVAR(seg, info->pages, (pages / 4) - 1);
+ else
+ SET_FARVAR(seg, info->pages, pages - 1);
+ SET_FARVAR(seg, info->reserved0, 1);
+
+ u8 r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos;
+
+ switch (modeinfo.depth) {
+ case 15: r_size = 5; r_pos = 10; g_size = 5; g_pos = 5;
+ b_size = 5; b_pos = 0; a_size = 1; a_pos = 15; break;
+ case 16: r_size = 5; r_pos = 11; g_size = 6; g_pos = 5;
+ b_size = 5; b_pos = 0; a_size = 0; a_pos = 0; break;
+ case 24: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
+ b_size = 8; b_pos = 0; a_size = 0; a_pos = 0; break;
+ case 32: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
+ b_size = 8; b_pos = 0; a_size = 8; a_pos = 24; break;
+ default: r_size = 0; r_pos = 0; g_size = 0; g_pos = 0;
+ b_size = 0; b_pos = 0; a_size = 0; a_pos = 0; break;
+ }
+
+ SET_FARVAR(seg, info->red_size, r_size);
+ SET_FARVAR(seg, info->red_pos, r_pos);
+ SET_FARVAR(seg, info->green_size, g_size);
+ SET_FARVAR(seg, info->green_pos, g_pos);
+ SET_FARVAR(seg, info->blue_size, b_size);
+ SET_FARVAR(seg, info->blue_pos, b_pos);
+ SET_FARVAR(seg, info->alpha_size, a_size);
+ SET_FARVAR(seg, info->alpha_pos, a_pos);
+
+ if (modeinfo.depth == 32)
+ SET_FARVAR(seg, info->directcolor_info,
+ VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE);
+ else
+ SET_FARVAR(seg, info->directcolor_info, 0);
+
+ if (modeinfo.depth > 4)
+ SET_FARVAR(seg, info->phys_base, modeinfo.phys_base);
+ else
+ SET_FARVAR(seg, info->phys_base, 0);
+
+ SET_FARVAR(seg, info->reserved1, 0);
+ SET_FARVAR(seg, info->reserved2, 0);
+ SET_FARVAR(seg, info->linear_bytes_per_scanline, modeinfo.linesize);
+ SET_FARVAR(seg, info->bank_pages, 0);
+ SET_FARVAR(seg, info->linear_pages, 0);
+ SET_FARVAR(seg, info->linear_red_size, r_size);
+ SET_FARVAR(seg, info->linear_red_pos, r_pos);
+ SET_FARVAR(seg, info->linear_green_size, g_size);
+ SET_FARVAR(seg, info->linear_green_pos, g_pos);
+ SET_FARVAR(seg, info->linear_blue_size, b_size);
+ SET_FARVAR(seg, info->linear_blue_pos, b_pos);
+ SET_FARVAR(seg, info->linear_alpha_size, a_size);
+ SET_FARVAR(seg, info->linear_alpha_pos, a_pos);
+ SET_FARVAR(seg, info->pixclock_max, 0);
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
}
static void
handle_104f02(struct bregs *regs)
{
- // XXX - vbe_biosfn_set_mode(&AX,BX,ES,DI);
- // XXX - OR cirrus_vesa_02h
+ //u16 seg = regs->es;
+ //struct vbe_crtc_info *crtc_info = (void*)(regs->di+0);
+ u16 mode = regs->bx;
+ struct vbe_modeinfo modeinfo;
+ int rc;
+
+ dprintf(1, "VBE mode set: %x\n", mode);
+
+ if (mode < 0x100) { /* VGA */
+ dprintf(1, "set VGA mode %x\n", mode);
+
+ vbe_hires_enable(0);
+ vga_set_mode(mode, 0);
+ } else { /* VBE */
+ rc = vbe_mode_info(mode & 0x1ff, &modeinfo);
+ if (rc) {
+ dprintf(1, "VBE mode %x not found\n", mode & 0x1ff);
+ regs->ax = 0x100;
+ return;
+ }
+ vbe_hires_enable(1);
+ vbe_set_mode(mode & 0x1ff, &modeinfo);
+
+ if (mode & 0x4000) {
+ /* Linear frame buffer */
+ /* XXX: ??? */
+ }
+ if (!(mode & 0x8000)) {
+ vbe_clear_scr();
+ }
+ }
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
}
static void
handle_104f03(struct bregs *regs)
{
- // XXX - vbe_biosfn_return_current_mode
- // XXX - OR cirrus_vesa_03h
+ if (!vbe_hires_enabled()) {
+ regs->bx = GET_BDA(video_mode);
+ } else {
+ regs->bx = vbe_curr_mode();
+ }
+
+ dprintf(1, "VBE current mode=%x\n", regs->bx);
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
}
static void
handle_104f04(struct bregs *regs)
{
- // XXX - vbe_biosfn_save_restore_state(&AX, CX, DX, ES, &BX);
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
handle_104f05(struct bregs *regs)
{
- // XXX - vbe_biosfn_display_window_control
- // XXX - OR cirrus_vesa_05h
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
handle_104f06(struct bregs *regs)
{
- // XXX - vbe_biosfn_set_get_logical_scan_line_length
- // XXX - OR cirrus_vesa_06h
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
handle_104f07(struct bregs *regs)
{
- // XXX - vbe_biosfn_set_get_display_start
- // XXX - OR cirrus_vesa_07h
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
handle_104f08(struct bregs *regs)
{
- // XXX - vbe_biosfn_set_get_dac_palette_format
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
handle_104f0a(struct bregs *regs)
{
- // XXX - vbe_biosfn_return_protected_mode_interface
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
static void
handle_104f(struct bregs *regs)
{
- if (! CONFIG_VBE || !vbe_has_vbe_display()) {
+ if (!vbe_enabled()) {
handle_104fXX(regs);
return;
}
****************************************************************/
static void
-init_bios_area()
+init_bios_area(void)
{
// init detected hardware BIOS Area
// set 80x25 color (not clear from RBIL but usual)
init_bios_area();
- if (CONFIG_VBE)
- vbe_init();
+ vbe_init(regs->ah, regs->al);
extern void entry_10(void);
- SET_IVT(0x10, get_global_seg(), (u32)entry_10);
+ SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10));
- if (CONFIG_CIRRUS)
+ if (CONFIG_VGA_CIRRUS)
cirrus_init();
// XXX - clear screen and display info
// XXX: fill it
- SET_VGA(video_save_pointer_table[0], (u32)video_param_table);
- SET_VGA(video_save_pointer_table[1], get_global_seg());
+ SET_VGA(video_save_pointer_table.videoparam
+ , SEGOFF(get_global_seg(), (u32)video_param_table));
// Fixup checksum
extern u8 _rom_header_size, _rom_header_checksum;